172273401 has 6 divisors (see below), whose sum is σ = 248839370. Its totient is φ = 114848928.

The previous prime is 172273391. The next prime is 172273421. The reversal of 172273401 is 104372271.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 156875625 + 15397776 = 12525^2 + 3924^2 .

It is not a de Polignac number, because 172273401 - 2⁶ = 172273337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172273421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9570736 + ... + 9570753.

Almost surely, 2^172273401 is an apocalyptic number.

It is an amenable number.

172273401 is a deficient number, since it is larger than the sum of its proper divisors (76565969).

172273401 is a wasteful number, since it uses less digits than its factorization.

172273401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19141495 (or 19141492 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 172273401 is about 13125.2962252286. The cubic root of 172273401 is about 556.4242843010.

The spelling of 172273401 in words is "one hundred seventy-two million, two hundred seventy-three thousand, four hundred one".